Molding-machine.



A. H. KELLs.

MoLmNG MACHINE. APPLICATION FILEDV SEPT. I2. |914. RENEWED FEB. 24. |916.

3 SHEETS-SHEET I.

A. H. KELLS.

MOLDING MACHINE. APPLICATION FILED SEPI. I2. |914. RENEwED FEB. 24. I9Is.

Patented A111111, 1916.

3 SHETS-SHEET 2.

A. H. KELLS.

MOLDING MACHINE.

APPLICATION HLED sEPr. 12. 1914. RENEwED FEB. 2'4. 1916.

K Patented Apr. 11, 1916.

IIB

TED STA PATENT ormoni.

fiALLENH. KELLS, z0F ADRIAN, MICHIGAN, ASSIGNOR 0F ONE-HALF T0 FREDERICK C.

SCHOLL, 0F ADRIAN, MICHIGAN.

MOLDING-MACHNE.

Specication'of Letters Patent.

Iatented Apr. 11, 1916i Application led September 12, 1914, Serial No. 861,464. Renewed February 24, '1916. Serial NoffSOjO. I

To all whom t mag/concern Be it known that I, ALLEN H. KnLLs, a

citizen of the United States, and a residentk of Adrian, in the county of Lenawee and State of Michigan, have invented a certain new and useful Molding-Machine; and I do hereby declare the following to be a full',

clear, and exact vdescription of the invention, such as will enable others skilled in the art to which it appertains'to make anduse the same, reference being had-tov the accompa nying drawings, and to the characters of reference marked thereon, which form a part of this specification.. i n f My invention relates to molding machines.

It particularly relates to 'cement and sand or concrete tile-making machines.

It has for its object to produce an efficient easily constructed, rapidly I operating tile molding machine. f.

By my invention the tile may be' mechanically tamped and drawn'. The parts are manually controlled andy may be mechan1.

Figure 1 of the drawings illustrates a side view of a construction containing my invention. Figs. 2, 3 and 4 illustrate details of the tamping mechanism. Fig. 5 is a top sectional view `on the line 5--5 indicated in Figl 1. Fig. 6 is 'a vertical sectional'view through the mold and pattern or core. Fig.

' 7 is an annular plate fo'rvremoving the molded tile from the machine. Fig. 8 is a side view and Fig. 9 isk an end view ofthe tamper. Figs. 10' and 1-1 'are sectional views of a modification of the construction illustrated in Fig. 1 taken'alongjthe linesindicated in the figures. Fig. l12 illustrates a draft block andA Fig. l13 illustrates a draft pin for 1 drawing the y'core of the molding machine.

1, Fig. 1 are supporting legs to which is secured a table top "2. The table top 2- is supported on shoulders andis lockedin po- StOIl by, means 0f rings 3 which are keyed y.

or boltedto rods which form extensions ofthe legs, 1. A shelf 5 is alsogsupported onv the legs 1 and between the'rings 6 which are secured to opposite sides ofV theshelf 5 mayf'be adjustably located by shifting the position of the rings `6 along the rods 4L'. The parts may be supported onn the base-"7.

A driving pulley 10 may beconnected by Xmeans of a belt with a suitable vsource of powerand driven thereby. The pulley 10 is keyed tothe shaft v11 which is supported in suitable bearings in two of the legs f1.` -A

` set of reverse friction cones 12 is connected to the shaft 11 and is shiftably keyedfby means of a featherkey 13 to the shaft 11.l The `reverse doublehead'ed friction cone 12 maybe shifted to reverse the operation of themechanism by any suitablemeansfsuch as the bell crank lever 14 which is connected tothe reverse double cone 12 through aslip ring 15. lA` shaft 16 is supported in bearings located inthe table-topl 2 and in a bracket 17. The bracket 17 is secured to two '60 I `5 to the rods 4. `The position of the 'shelf of the legs 1. `A pinion 18 is'keyedt'o'the shaft 16. A gear wheel 1 9 is supported above the table top 2 and is keyed to ashaft locatedin the table top.` The upper end of the shaft issecured by a Washer and :nut

20. rlhe pinion -18 meshes 'with the gear wheel 19 and' causes rotation in one .direc-l tion or the other according tothe position of the double reverse friction cone12.1-

- Flasks 25 are hingedly connected tothe top of the gearv wheel 19. `The flasks 25 are located on opposite vsides of the center of the gear wheelf19 and over openings 26 in thegear wheel having a vsize substantially the same as that of the inner diameter vof the flasks. The fla`sks25 may be positioned onannular sheet metal bases 27` which form ianges 28 which extend inwardly a short distance 'over the openings V26. An annular sheet metal plate 29 may be located between the hinges 30 which connectthe partsy of each flask 25 located concentric with the flask 25 andthe ioo e to thelgear wheel 19.? Itis l pinion 42.

the molded tile may be removed by lifting on the plate 29. `For convenience of handling the plates 29, they are provided with extending ears 32. The ears 32 may be easily seized and the molded tile lifted from4 the gear wheell19 and removed from the machine.

A core 40 is supported in a cylinder 41 formedin the table top 2. The core 40 is movable vertically in the cylinder 41 and may be raised upwardly and into the center of each flask when theflask 25 is placed over the cylinder 41. The core may be raised and lowered by means of a pinion 42 and a rack 43. The rack 43 is connected to the core 40 and moves in a bracket 44 which is connected to the lower end of the cylinder 41. |The rack 43 is provided with a key 45 which prevents rotation of the rack 43 while it is being operated upon by the The pinion 42 may be connected to the same source of power to which the wheel 10 is connected, or it may be manually operated by the crank 46 which is connected to the shaft 47 to which the pinion 42 is keyed.

The core 40 is provided with a flange 48 which is substantially the same diameter as the inner diameter of the cylinder 41 and co-aots with the rack and its bearing to guide the core 40 as it is moved vertically in the cylinder 41. Vhen the core 40 is lifted into position in the flask 25 the flange 48 makes contacts with the inwardly extending flange 28 and operates to prevent the escape of any material from the bottom of the flask-25.

The core 40 is divided into two parts 49 and 50. The plane of division extends through the axis of the core and at a slight angle thereto. The part of the core having a larger portion of the bottom of the core is first drawn and then the other is drawn. The withdrawal of one of the wedge-shaped parts of the core along the inclined plane of division reduces one diameter of the core and gives room for easy withdrawal of the core from the molded material. The rack 45 is provided with a rod 51 which extends up through the center of the core and through the top 52.- The top 52 is secured by means of threaded screws 53 to the part 49. The rod 51 is provided with a ring 54 which is keyed to or yforced on tothe rod 5l. The parts 49 and 50 are provided with inwardly extending bifurcated fingers 55 which are located on opposite sides of the block 56 which is also secured to the rod 51. The part of the core 40 is provided with pins 57 which extend up from the bottom of the part 50 of the core into a shoulder formed in the part 49 of the core and oper'- ate to guide the resetting of the parts relative to each other. When the rack 43 is drawn downwardly the pin 51 pulls the ring or shoulder 54 against the inwardly extending finger and the part 50 is drawn down with the rack until theblock 56 reaches the other linger 55 whereupon both parts of the core will be drawn downwardly. As the part 50 is shifted relative to the part 49 the two parts slip along the inclined division plane reducing thereby one of the diameters of the core. This permits easy withdrawal of the core without mutilation of the molded form contained in the flask 25.

The molded material may be evened or cut off in the plane of the top of the flask by means of the horizontal plate 60 which moves laterally across the top of the flask in a channel 61 located in the shelf 5. The plate 60 may be actuated by any suitable means such as the bell crank lever 62 which is pivoted on one of the rods 40. When the flask has been filled with material about the core 40 the upper end of the molded mate rial is evened off by swinging the arm 62 so as to push the plate 60 over the top of the flask and thus shear or cut off the molded material.

The shelf 5 is provided with the hopper 65 which registers with an opening 66 formed in the shelf 5. The opening 66 is located in the axial line of the cylinder 4l so that when the flask 25 located on the gear wheel 19 is made to register with the cylinder 41 the top of the flask 25 will also register with the opening 66 located in the shelf 5 and with the bottom of the hopper 65. Material such as a mixture of cement and sand or any other suitable moldable or plastic or settable material may be shoveled or inserted into the hopper 65 and the hopper 65 will feed the material into the flask 25 and around the pattern or core 40 when the core is in position in the flask 25. The material may be tamped as the flask is filled by means of the tamper 70.

The tamper 70 is provided with two spatulate parts 71 connected through a hub or head 72 to a vertical rod 73. The spatulate parts are provided with lower wedge-shaped ends 74 and have inclined leading surfaces 75 which near the ends 74 form a sharp vwedgeshaped edge 76 which terminates rearwardly into a tamping horizontal or flat surface 77 located between the beveled edges or sides 7 8. As the tamper 70 is rotated and raised and lowered vertically the leading inclined surface operates to collect and direct the material downwardly while the sharp corner 76, together with the beveled edges 78 operates to spread the material laterally and the material is then brought under the operation of the flat tamping surface 77 which tamps the material into position between the core and the wall of the flask as the tamper is actuated both vertically and ro-tatively. The rod 73 is provided with a feather v79l and 1 is. rotatively, connected ywith the gear wheel 80. The gear'wheel 80 is supported in abearing located inthe bracket 81 which is connected to the 4frame 82.` .The gear wheel 80 is rotated by means of bevel gear .wheel83 which is connectedto `the shaft 8 4 which islocated/in'bearings formed ina bracket 105 which is also 4secured to the frame 82. y A suitable drivingmechanism may be connected tothe shaft l84.- Injthe present instance a sprocket wheel 85 is keyed to the shaft 84 and is driven by the sprocket chain'86through which.. it is connected to the Sprocket wheel 87 loosely mountedon the be provided with clutch engaging-ngers or faces whereby the operation lof -thebell crank lever 89 lwill connect the drivingshaft 11 with the bevel gear wheels l80` and 83 through the sprocket wheels and chain.

The rod 73 is guided in its verticaljmove-` l ments lbymeans of a right yangularfgportion of the upperend'of the frame 82 which tembraces a ring 91. A` yring 92 is adjustably secured to the rod; 73frintermediate along its length. Itis provided with two beveled pins 93eXtending at right angles to the axis of the block 92 and the rod 73. A rack 84 having incl-ined wedge-shaped teeth issup-A portedon abracket 96 whichis secured to the supporting frame 82. As the lrod 73 fis rotated by the operation of the gear wheels 80 and 83 the beveled lingers 93 enterbetween two consecutive Ateeth oftherack-95 and by reason of the inclined relation of the teeth of the rack 95 the rod is lifted and al# lowed to drop. x As` the tamper 70 changes in its vertical position on accountof the filling of the flask 25 `the ring- 92y isV raised along the rack 94 andfconsequently the teeth 95 of the rack 94 are engaged one after the other 'until the tamper ris yforced'from -the flask 25. The position of the rod 73l and consequently of the tamper 70 relative to the flask 25 and of the ring 92 relative to the rack 94 may be controlled by the lever 98 which is pivoted to the upper end of the bracket 96 and is connected at one end by means of the link 99 to the ring 100 which is positioned on the rod 7 3 so as to en age the ring 101 which is locked to the rod 3. The lever 98 may be operated by the rod 102 which is connected to onev end of the lever when it is desired to lift the rod 73 and remove the tamper v70 from the flask 25.

In the operation of the machine the core 50 is inserted in the flask 25 and the material is tamped in around the core until the flask is filled, whereupon the tamper is withdrawn by the operation of thelever 98 and the upper end of the molded material is evened off by the operation of the lever 62.

The core 50 is then'Y withdrawn by the rota tion of thepinion'i42 which draws the core `50 fromthe flask, `25. wfllhe reverse friction l i neath the shelf-5` andzbringsthe other flask 70 'f' 24jcontaining:the molded material from beinto register; with :the `cylinder 41 containing .the core-.40 landwiththe hopper `65 on the` shelf15.` -Asl theother flask isfbeing filled and `tamped afterthe core has been lifted into` position, the molded materialv formed; in the :first flask may bey removed by lifting the pl`ate-29. In thisway the-.tiles `.may-loe formed fand removed one 'after the other.;

:The modifications shownfinvv 10-aiid 11 areprQVided with rasfmany cores as there arezflasks-.andfthe cores 4'may be drawn. and 1' returned to the flask by the rotation of the gear wheel19. The cores and11=1 are carried inl lthejgear wheel :112 which; is keyed to the shaftf113 supported in the .stepped bearing -114`locatedinthe base1115 which is I connected Vt0 lthe legs 11# lThe shaft` 113 isf also' supported in `a ibearingfcontained in the shelf 5.`- =The c0-res110 andlll arezconnected to rods-116 'having channelsy 117 The rods ',116 are vertically movable in the ends .of a crossarm 7l18having. ybolts 119 which extend l'into the f channels, 117 andl preventthe: `rotation ofthe rods 116 vwith respect to the ,cross arm; 118. locked to the shaft 1113 byfmeans offama- The cross-arm 118 'is `chinevbolt120l` The. rod 118 movesfwithfthe l gear 'wheelf112ry The gea-r'wheel 112 and the cross-rod 118 carry the cores 1110 land 111k in a vertical positionpwThey are guidedby the openings 121fformed inl their vertical niovementsinand outofrthe flasks 25'. The lower side of the gearwheel 112 is provided with recesses formed :around the edges of the openings 121into which the `flanges 122 loserted when the cores are placed in the flasks 25 so as to prevent :the escape of the material by the lower ends of the cores 110 and 111.

A block 125 is adjustably secured to each.

rod 116 by a lock pin 126. The block v125 is provided with a pin 127 having'` an oblong head 129. The head 129 is provided` with rounded wedge-shaped ends 130. .'The

head 129 moves in a channel 131 which is`r catedfon the" fla-sksllO 'and 111 may befin- 113 so that as the shaft 113` is rotated and the pin heads 129 are carried around by arm 118 and the gear wheel112, the heads will be raised andlowered by the channel 131 which will draw and raise the rods 116 and the cores 110 and 111 vertically. Y

In the operation of the form ofthe invention illustrated in Figs. 10 and l1, the material may be tamped and molded on one side of the machine and as the flask is carried around by the gear Wheel 112 the core will be withdrawn from yone flask 8 at the same time it will be inserted into the other flask so that when the other flask arrives in position beneath the hopper 65 the core of the other flask will be in position within the flask. The molded material contained in the first flask may then be removed by opening the flask as before and lifting the molded material from the machine.

The construction selected and described, may be greatly varied in the arrangement and manufacture of its parts and in the substitution of elements having equivalent functions and such modifications may be used for many varied purposes and still contain the invention.

Having thusv described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

"1. In a molding machine, the combination of a core composed of two parts divided in a plane at an angle to the axis of the core, a rod extending axially through the core, the rod having a pair of shoulders, an

ear extending inwardly from one of the parts of the core, and between the shoulders of the rod, the otherof said parts also having an ear extending inwardly and located in spaced relation with respect to one of the shoulders, means for drawing the rod to successively start the parts ofthe core and then move the parts of the core together.

2.',In a molding machine, the combination of a core composed of two parts divided in a plane at an angle to the axis of the core, a rod extending axially through the core, the rod connected to one of the parts of the core, the rod and the other part of Copies of this patent may be obtained for ive cents each, by addressing the the core having coacting shoulders located in spaced relation to each other so that the shoulder of the rod will not draw axially one part of the core until after the other part ofthe core has been drawn axially a short distance and will then draw the parts axially together.

8. In a molding machine, the combination of a core composed of two parts divided in a plane at an angle to the axis of the core, a cap for covering the upper ends of the said parts, a rod axially movable in the said cap and in one of the parts of the core, the rod secured to the other of the parts of the core, engaging members, one located on the'rod and the other located on the part other than the one to which the rod is secured and located in spaced relation with respect to each other, means for drawing the said rod whereby the parts will be successively started and will then be moved together.

l. In a molding` machine, the combination of a plurality of cores, the cores composed of two parts separated by a plane at an angle to the axis of the cores, a rod for moving the parts of the core axially and having means for'limiting the movements of the said parts axially relative to each other and starting them in succession, an elliptical track and means connected to the said rod and moved by said track for drawing the said cores and means for rotating the said cores about an axis exteriorto the cores so as to be operated by the saidftrack.

In testimony whereof, IV have hereunto signed my namev to this specification in the presence of two subscribing witnesses.

' ALLEN H. `KELLS. Witnesses:

DELLA H. AYERs, MERLE I. AYERS.`

Commissioner of Patents,

Washington, D. C. 

